HarmonyOS 鸿蒙Next RichEditor中有没有清空所有数据的API？没有的话有没有什么办法能够解决

没有直接清空所有数据的api,可以看一下deleteSpans：

@Entry
@Component
struct Index {
  controller: RichEditorController = new RichEditorController()
  options: RichEditorOptions = { controller: this.controller };
  @State textFlag: string = "TextFlag";

  build() {
    Column() {
      Column() {
        Text(this.textFlag)
          .copyOption(CopyOptions.InApp)
          .fontSize(50)
      }
      Divider()
      Column() {
        Button("删除选择内容").onClick(() => {
          this.controller.deleteSpans({
            start: 0,
            end: 5
          })
        })
        RichEditor(this.options)
          .onReady(() => {
            this.controller.addTextSpan('Area1\n', {
              style:
              {
                fontColor: Color.Orange,
                fontSize: 50
              },
              gesture:
              {
                onClick: () => {
                  this.textFlag = "Area1 is onClick."
                },
                onLongPress: () => {
                  this.textFlag = "Area1 is onLongPress."
                }
              }
            })
          })
      }
      .borderColor(Color.Red)
      .width("100%")
      .height("70%")
    }
  }
}